TreeSet Simple to use

Only the use of methods, non-source analysis.

1  Public classTest {2 3      Public Static voidMain (string[] args) {4Treeset<string> treeset=NewTreeset<>();5Treeset.add ("Se");6Treeset.add ("Ald");7Treeset.add ("Boo");8Treeset.add ("CC");9Iterator<string> iterator=treeset.iterator ();Ten          while(Iterator.hasnext ()) { OneString string =(String) Iterator.next (); A System.out.println (string); -         } -     } the  -}

Output:

Ald
Boo
Cc
Se

When using the TreeSet collection, the element must implement the comparable interface.

1  Public classPersonImplementsComparable<person> {2     PrivateString name;3     Private intAge ;4 5      PublicPerson () {6         //TODO auto-generated Constructor stub7     }8 9      PublicPerson (String name,intAge ) {Ten          This. Name =name; One          This. Age =Age ; A     } -  -      PublicString GetName () { the         returnname; -     } -  -      Public voidsetName (String name) { +          This. Name =name; -     } +  A      Public intGetage () { at         returnAge ; -     } -  -      Public voidSetage (intAge ) { -          This. Age =Age ; -     } in  - @Override to      PublicString toString () { +         //TODO auto-generated Method Stub -         return"Name:" + getName () + "Age:" +getage (); the     } *  $     /**Panax Notoginseng * Ascending order -      */ the @Override +      Public intcompareTo (person person) { A         //TODO auto-generated Method Stub the         if( This. Getage () >Person.getage ()) { +             return1; -}Else if( This. getage () = =Person.getage ()) { $             return0; $}Else { -             return-1; -         } the     } - Wuyi}

Test class:

1  Public classTest {2 3      Public Static voidMain (string[] args) {4         //TODO auto-generated Method Stub5Treeset<person> Tset =NewTreeset<>();6Tset.add (NewPerson ("Shldom", 23));7Tset.add (NewPerson ("Tom", 12));8Tset.add (NewPerson ("Woa", 45));9Tset.add (NewPerson ("Moe", 87));TenIterator<person> iterator=tset.iterator (); One          while(Iterator.hasnext ()) { A System.out.println (Iterator.next ()); -         } -     } the  -}

Output Result:

Name:tom Age:12
Name:shldom age:23
Name:woa age:45
Name:moe age:87

TreeSet Simple to use